-* Renamed HTTPi to HttpUtil
-* Renamed HTTPi_Request to HttpRequest
-* Renamed HTTPi_Response to HttpResponse
-* Added several methods to HttpRequest: unsetOptions(), addHeaders(array),
- getHeaders(), unsetHeaders(), addCookies(array), getCookies(), unsetCookies(),
- setSslOptions(array), getSslOptions(), unsetSslOptions()
-* Improved HTTP ranges support